gov.noaa.nmfs.inport:17370 eng UTF8 dataset Alaska Fisheries Science Center 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA https://www.afsc.noaa.gov WWW:LINK-1.0-http--link Website Website for this organization information 0700-1700 Pacific Time resourceProvider 2026-03-04T19:17:18 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) AFSC/NMML: Southeast Alaska Cetacean Vessel Surveys, 1991 - 2012 AFSC/NMML: Southeast Alaska Cetacean Vessel Surveys, 1991 - 2012 2015 creation publication NOAA/NMFS/EDM 17370 https://www.fisheries.noaa.gov/inport/item/17370 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information Alaska Fisheries Science Center (206) 526-4000 (206) 526-4004 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA afsc.webmaster@noaa.gov https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center WWW:LINK-1.0-http--link Alaska Fisheries Science Center Website AKFSC Home Page information 0700-1700 Pacific Time originator tableDigital In 1991, NMML initiated cetacean studies with vessel coverage throughout inland waters of Southeast Alaska. Between 1991 and 1993, line-transect methodology was used to: 1) obtain population estimates of both harbor porpoise and Dalls porpoise, 2) establish a baseline for detecting trends in porpoise abundance, and 3) define porpoise distributional patterns and seasonality. Three line-transect surveys were carried out each year spanning spring, summer, and fall. To update abundance and trends for both harbor porpoise and Dalls porpoise, NMML once again initiated line-transect surveys in 2006 (spring and summer), 2007 (spring, summer and fall), 2010 (summer and fall), 2011 (summer and fall), and 2012 (summer) using methods comparable to those used in the early 1990s. Assess cetacean distribution, group size, seasonal occurrence, abundance and population trends. National Marine Fisheries Service Regional Office in Juneau, Alaska, has provided funding for this project. underDevelopment Clapham, Phillip phillip.clapham@noaa.gov pointOfContact Waite, Janice 206-526-6554 7600 Sand Point Way, NE Seattle WA 98115-6349 janice.waite@noaa.gov custodian annually abundance distribution line-transect survey seaonal occurrence trends theme fall spring summer temporal Southeast Alaska place DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Cetacean Assessment and Ecology Program project InPort otherRestrictions Cite As: Alaska Fisheries Science Center, [Date of Access]: AFSC/NMML: Southeast Alaska Cetacean Vessel Surveys, 1991 - 2012 [Data Date Range], https://www.fisheries.noaa.gov/inport/item/17370. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed. otherRestrictions Use Constraints: User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. Acknowledgement of NOAA/NMFS/AFSC, as the source from which these data were obtained in any publications and/or other representations of these, data is suggested. otherRestrictions Distribution Liability: The user is responsible for the results of any application of this data for other than its intended purpose. NOAA denies liability if the data are misused. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 17370 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/17370.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference eng; US biota oceans Excel -137 -130 54 60 Inland waters of Southeast Alaska | Currentness: Ground Condition 1991 false eng false Data File SEAK vessel 91 92 93 2018-11-30 publication SEAK vessel 06 07 10 11 12 2018-11-30 publication CSV - Comma Separated Values (Text) NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact WWW:LINK-1.0-http--link NCEI Contact Information Information for contacts at NCEI. information distributor https://accession.nodc.noaa.gov/0140931 WWW:LINK-1.0-http--link https://accession.nodc.noaa.gov/0140931 csv files with effort and sighting data. download dataset Completeness Report This data includes surveys conducted in the years 1991 - 1993, 2006, 2007, 2010, 2011 and 2012. The surveys conducted in 1991-1993 used a computer program developed by Jim Cubbage. In the 2000's, survey data was collected with Wincruz (Windows Real Time Sighting-Effort Event Logger developed by Robert Holland at Southwest Fisheries Science Center). Most years used the NOAA ship John N. Cobb, but after it was no longer available in 2008, four different charter vessels were used to conduct our surveys: the F/V Steller (commercial fishing vessel) in July 2010; the F/V Northwest Explorer in September 2010; the R/V Medeia (patrol vessel operated by the Alaska Department of Fish and Game) in June and September 2011; and the R/V Aquila in July 2012. In the early 1990's, six observers were used to collect the data. For the 2006 and 2007 surveys, four observers were used, in 2010, 5 observers were used, and in 2011 and 2012, 6 observers were used. Because of the differences in the number of observers, the rotation schedule (time spent at each station) changed over the years. Conceptual Consistency Accuracy was ensured by reviewing and editing the data in the field on a daily basis. For the surveys in the 2000's, post cruise processing included data extraction and error checking using customized software (writen by Paul Wade, National Marine Mammal Laboratory). Tracklines and sightings were plotted in ArcMap to check for accuracy. Methods are described in http://fishbull.noaa.gov/1133/dahlheim.pdf. NA